Grinding machine for railway tracks



March 12, 1935. H. H. TALBoYs GRINDING MACHINE FQR RAILWAY TRACKS Fi1edAug. 19, 1951 5 Sheets-Sheet 1 ummm March 12, 1935.

5 Sheets-Sheet 2 Filed Aug. 19, 1931 2 KZ y? @V6/far 7@ E Uw Y WM ifMarch 12, 1935. H, H. TALBoYs 1,994,151

GRINDING MACHINE FOR RAILWAY .TRACKS Filed Aug. 19. 1951 5 Sheets-Sheet3 March 12, 1935; l H H, TALBOY'S 1,994,151

l @BINDING MACHINE FOR RAILWAY TRACKS Filec'' Allg.. 19, 1951 5Sheets-Sheet 4 T5 lf j March 12, 1935. H. H. TALBoYs 1,994,151

GRINDING MACHINE FOR RAILWAY TRACKS Filed Aug. 19, 1951 5 Sheets-Sheet 5riff/ifa? Patented Mar. 12V, 1935 GRINDING MACHINE Fon `RAILWAYfrissonsl A Henry H; Talboys,`Milwaukee, Wis., assigner to NordbergManufacturing Co., a corporation of Wisconsin Milwaukee, Wis.,

` applicati@ August i9, 1931,s'eria1N0.557,969 p eolaims. (ci. 51,-178)U`My invention relates to an `improvement in grinding machinesl forrailroad tracks and has for one purpose the provision of aV simple,light and efficientV grinder which maybe mounted'upon 5 or moved along arailway track'and which may b e readily removed from the track.-AAnother-object is the provision of an improved control means or clutchadaptable for use with the grinderor with other power driven 'mechanismsv*Other objects will arise from time to Atime in the course of thespecification and claims.` .I illustrate my invention more or lessdiagram matically in the accompanying'drawings wherein Figure 1 is aside elevation; y Figure 2 is an end elevation;

Figure 3 is a section on a line 3--3 vof Figure l; Figure 4 is a similarsection with parts infa diiferent position; i? i x Figure 5 is a sectionon the line 5--5 of Figure 3 with parts omitted; Figure `6 is a sectionon the line 6'-;6'of` Figure 1;

Figure 7 is a section on a line 7-7 of Figure 6; l

Figure 8 is a View similar to FigureSof a variant form;

Figure 9 is a section on lthe-line 9 9 of'Figure 3; i v

Figure 10 is a view similar to Figures 3 and 8 of a `further Variantform; and i vFigure 11 is a section o-n the line 11-11 of Figure 10.Like parts are indicated" by like symbols throughout the specificationand drawings.

'Referring to the drawings,"AA indicate the rails of a track. Spanningtheserails is the transverse shaft A1 which is provided at one end withany suitable roller A2 of vinsulating material. Rubber is a practicalmaterial' for this purpose. The shaft A1 is secured at its opposite endto aV base frame generally indicated as B. The frame may include theyoke shapedor longitudinally extending angles B1 which are connected asby the horizontal channels `B2. The ends of the Vchannels B2 may beconnected by the arcuate channel portions B3. Downwardly depending fromthe angles B1 are the'flanges B4 Vto-which the shaft A1 is actuallysecured. Other depending flanges are members B5 which receive thetransversally extending axles B6 of the flanged rollers B", whichrollers are provided at each end with flanges B8 conforming generallytothe form and width of the tread portions of the rails A.

C generally indicates any suitable motor structure mounted on theaboveframework. It. n-

cludes a shaft C1 carrying "a fly-wheel Czwhich l also serves asdrive-wheel. The fly-wheel C2 may be channeledas at C3 `to receive theV-.shaped belting generally indicated as C4. The belt or belts employedpass also about adriven'pulley C5.

'Ihe pulley C5 is provided4 with a shaft or axle D 4which rotates inrthebearings D1 at opposite ends of acylindrical sleeve D2, vwhich sleeve ismounted'on the bracket Ymembers D3, which in turn are rotatably mountedas at D4 upon the angle members D5 associated with 'the frame B. Thebrackets D3 include split portions D5 bolted together about the cylinderD2 as by the bolts D". The `arc of rotation of the brackets D3 may belimited, as by the stop D8. Associated with the brackets D5, forexample, being welded thereto,.is the lever structure D9 with the lever'extension proper D10 which is provided with a spring D11, wl'nch may besecured to any suitable securing means, for'example a link of the chainD12, one link of. which may be secured or welded to an arcuate,` memberB3. When the parts .are in the positionas seen` in Figures 2 and 3,Vthev pulley C5 is rotated about the center'D4 in a counter clockwisedirection, and this holds the belting C4 tightly about the drive-wheelC2, in driving relationshiptherewith. i i

-It willv be observed, as in7 Figure 3, that the spring rD11 normallyurges one pulley away from the other into a driving relationship. Itwillbe understood, however, that in case the device Vis subjected tov apredetermined overload su'lcient to overcome the strength of the spring.'D11, the spring will give and permit a shortening of the distancebetween the pulleys, whereby the upper side of the belt will become solooseas to permit slippage to occur. The arrow indicates the directionofy rotation, the lower belt being `the tight side of thebelt. i

E indicates a guide for theV lower turn of the belt C4. kIt is shown asstraight, except for the ends which are downwardly turned' or curved asat E1. It may beA mounteclas on the vbracket member E2. It conformsgenerally to the location of the lowerreach of the belt-C4 Vwhen it isin driving relationship, but is spaced slightly down- Wardlytherefromto'prevent frictional contact when driving. E3 indicates an upper belt:guide whichis provided with an arcuate portion E1 conforming generallyto the arc of the pulley C5said guides being securedby bracket membersE5 to the hinged brackets D3. A The rectilinear guide E3 is spaced awayfrom the upper reach of the belt C4 when Vtheparts are in drivingrelationship, as-shown in Figure 3. When the operatorre- `C2 of themotor.

Figure 5. i H14 leases the spring D11 from the chain D12 the pulley C5may swing by its own weight into the position in which it is shown inFigure 4. The guide portions E3 and E4 may engage the belt and cause itto bulge out and take the position in which it is shown in Figure 4.Preferably the belting C4 is moldedto forma. circle and tends to expand,when released, "into" full circular form. 'I-Iowever, it is confinedbetween the guides E, E3 and E4,

and is therefore, constrained to bulge out Aas` shown in Figure 4. Thisbulging removes it from driven contact with the iiy-whe'el.ordrivewheelThe motor may be constantly driven, and the mountingofthe pulleyC5,incooperation with the guides 'E,cE3,.and.E4 actsasa very simple form ofclutch.` A main purposeffory permitting release of the belt C4 fromdriven connection with the drive-whe'elC2' is to permit-the engine to bestarted. In order to shield `the, `pulleys and belt and for safety meansI may provide afgard;plateEGp'whichtmay vbe welded tofthe guidefEl. In.iorder` to :permit .the 2. ready ',inanual-z1movementofthegrindingdevice asia' whole Irmayfemploy 'the' 'longitudinally'.extendingcarrying lbars GG whiclr may bewelddworg-otherwise' secured tothe'arcuate membersfB; andi which. extend; arsufcientdistancefto permit.a1-pair .of :operators to liftslthe aientirectdevice.' andv rcarry..`it like .ia u sedan chair. LLIzzdo-Jnotxzwislrv to be. limited to:Ianyspecificfdetail-:of grinding. member-:butt I .illustrate` .the -followinguas a: practical? exemplifcation'fofa'myn in- Vention.`zllxiindicates a. grinding disciof abrasive material. Itzimayxbe'confined betweensthetwo clamping'members' H1, .H2 and .the `'clampmuti-H3 which issin'fscrew.. threaded: relationship uwithzthe outeraendH4. .ofi the'sshaft llel-fv'vhichv rotateswithin bearings -Hswithinr athandle' cylinder .lf-I1. THS vkis any ,suitableffsupport for. ana-arcuatei'guard.--fH9 which .carries a handle? H10. H11 israny suitableU f-i'shapedrmembenwhich may` carry' anadditional handle fI-I12. 'Il'ieIshaftI-I5 :is:connected, .Las :by.. a flexible shaft HNF-with" the:shaft Drasiishown in issany suitable surrounding' .flexible cover. fReferring to the form of Figures landQILillustratefai'devicen:whichrdifferent:meansiare employed-for. moving .thebeltr or:belts .T04 1 intoP-.and outii'of driving relationship with the'. pulleyTG2. The.: pulley i305 avisrin .this casemountedluponl xed brackets.orfsupportsgl, whichxfmay: correspond with the membersD3'exceptin thattheyfare-'held against-rotation. Therefore, a..the faxes.\ofrota Thelb'elt"C4":isv confined fby upper and lower generallyrectilineaivsguide: members I1and I2 which arer joinedbythelarouate'fguide .portionl' I3. The belt C4 being molded to acom-pleteicir'cle;itterids to take :the dotted-1'.lineinposition 'ofiFigure? 8,Y if released. .".Insuch positionv litsisheldrby 'the' guidesin su'chfa'shionlas' to cause. it-.toilbulge'outinto -the inoperativeposition illustrated .in dottedline, outtfoff contactwith the pulley.1C2.' Inaorcleri1 to effects a -Sdriving connection between-.thepulleysC2'and"C5`Ipro vide belt tighteningfmeansfwhich lInayinclude, forexamplefthe idler 'I4' mounted at thefendof the links" I5,.whicli`A arepivoted ask at'I to the up'staridingfxedsupport I7. On. thissup#portisfabracket" or abutment IB whiohlis. adapted to receivethe'lowerend of the'locking'-member or dogI I9; `which is pivotedto one ofthelinksIs.

'framejasiat I1 1 and to the link'I5 as'- at 112. The spring' normally1draws the parts into the'full line 113 indicates a handle associatedwith the links I5.A

114, indicates a-.short guide .positionedbeynnd the idler I4 and'inline'with. the v4guide 1 2;-

Figures 10 and 11 illustrate a further variation -in.,which the' idlerLis employed to draw outwardly upon the belt C4 in order to tighten it.

The idler. isshownlas mounted upon the extremities of the links L1,which are pivoted to the frame as at L2. .Pivoted concentrically withthe idler L are .thelinks or arms'j L3, L4 which are themselves`vpivoted respectively-to pivoted guides L5, L6. A

spring L'7 is employed, for example, in connection Withthecliain' L8 forholding the parts in the full j lineonjoperative position of Figure 10.L9 indicates a locking member pivoted on the links L1, whichmay'bermovedinto thedottedy or locking: position in oppositiony to'ther'flockingiaabutmetilil. -It is toebev understocdin; this formJ-as-nthe others thefbelt is.y constrained'V by.v the-fguidesao inoperativeposition. The circularly'formed"be1t positively 4thrusts itself intoinoperative position when it is released-within the-spacerdene'dtby ftheV guides.

1t-winne realized that-.whereas rhaveishwva practicaland operativedevice;nevertheless'lmay changes may be made infsize, shape,.:numbemaddisposition of parts :without: departin'gffroni 'thespirtof vmyinvention. .I,r therefore ,fiwish;'my drawings to be taken: asin-:abroadsenserillustrative and diagrammaticyratherthan ass'lin'iit-v ing. meitoithe details of' the deyiceia's herein'dej scribedfandfshown. f 1

The use'and operation ofmyqrinventiorrrareias follows: I

A typical embodiment ofimyvinventionis-a gri'ndingzandacuttingmachine/:Which -isfparticularly applicable for use on the rails of arailway track. Itmay for example include a' framework, n as shown inFigure 2, balanced'above one: rail,

but ysupported` as ;by vthe transversely.: extending supporting memberA1. Since theqcenter lf weight ofthemotoris between'the ltwo raiishe lweight of the motor and the platform upon which itis mounted holdsthemember A1 'itsinsulating contact A2 the` position which the' partsare shownfiin :Figure f 2. Anf advantage` in -spotting the engine, forexample a gasolinereni gine, over onerail, :causes 'the rail: to'v'take'the vibration of rthe' engine.l `,The drive wheel` C2f :theengine-drives the'pulley D7, whichi'pulley is" inzdirect .drivingconnection ys'riththe'exible power transmission r`H13 which Vextends fto; :any suitable vtrackvforking member. Ifmightfemploy a= wideY varietyof such memberssbut I 'have shown only the Igrindingdisc*-H. VvThemember. is

preferably -housed'by' the .guard H9,i.which1thas toward thefdrivefwhe'el C2i thel guard kE3 takes the position shown-in Figure-4.The tendency-f lthe b'eltC4 ltof'conform'tola circle isfresistd'lbyftheconning effect of the opposed guides E and E3. As the pulley C hasapproached the drive wheel C2, the slack of the belt so provided bulgesout as shown at the right of Figure 4, out of frictional contact withthe constantly rotating drive member C2.

The form of Figures 8 and 9 varies, in that the pulley C5 rotates abouta xed axis. The slack is normally taken up by the idler I4. When theidler I4 is moved, against the spring 110, then the bulging lactioncharacteristic of the above described form takes place.

In the form of Figures 10 and 11 the idler L is positioned withininstead of without the belt C4, and the guide members L5 LG move withit.

The bulging action, however, is substantially the same.

I claim:

1. In a track working machine, a base frame, means for positioning saidframe on a rail of said track, a mo-tor mounted on said frame, the axisof rotation of sai-d motor being parallel with said rail, a balancingconnection extending from said frame to the other rail of the track, theframe and the parts thereon being in substantial balance upon the singlerail over which they are positioned but overbalanced slightly toward theadjacent rail, a track working driving shaft mounted for rotation aboutan axis substantially parallel toy the axis of the motor and positionedlaterally thereof between the rails, and a carrying frame includingtransversely positioned upstanding yoke members straddling the motor andtool driving shafts, and a plurality of longitudinally vextendingcarrying bars secured to said yoke members on opposite sides of themotor axis.

y2. In a track working machine, a base, a plurality of track engagingrollers rotatably mounted on said base, said rollers being provided withaxially spaced flanges and being adapted for alignment upon a singlerail of a track, a tubular member extending laterally from said base,and extending toward the opposite rail of the track, an insulatingcontact member upon said tubular member, adapted to contact with saidopposite rail, a motor mounted upon said base, the axis of rotation ofsaid motor being parallel with the rail, said motor and base being insubstantial balance upon the single rail over which they are positioned,but o-verbalanced slightly toward the adjacent rail, and a carryingframe secured to said base, said frame including generally arcuatemembers lying in planes at right angles to said rail and connected attheir lower` ends to said base, said arcuate members being connected bylongitudinal elements extending substantially beyond said arcuatemembers in each direction, said extending portions being adapted toserve as carrying handles for the track working machine.

3. In a track working machine, a base, a plurality of track engagingrollers rotatably mounted on said base, said rollers ybeing providedwith axially spaced flanges and being adapted for alignment upon asingle rail of a track, a tubular member extending laterally from saidbase, and adapted for engagement with the opposite rail of the track, amotor mounted upon said base, the axis of rotation of said motor beingparallel with the rail, said motor and base being in substantial balanceupon the single rail over which they are positioned, but overbalancedslightly toward the adjacent rail, and a carrying frame secured to saidbase, said frame including generally arcuate members lying in planes atright angles to said rail and connected at their lower ends to saidbase, said arcuate members being connected by longitudinal elementsextending substantially beyond said arcuate members in each direction,said extending portions being adapted to serve as carrying handles forthe track working machine.

4. In a track working machine, a base, a plurality of track engagingdouble flanged rollers rotatably mounted on said base and aligned upon asingle rail of a track, a transverse member extending laterally fromsaid base toward the adjacent rail of the track, a motor mounted uponsaid base, motor and base being in substantial balance upon the singlerail over which they are positioned, but overbalanced slightly towardthe adjacent rail, and a carrying frame secured to said base, said frameincludinggenerally arcuate members lying in planes at right angles tosaid rail and secured at their lower ends to the base, saidarcuate-members being connected by longitudinal elements, saidlongitudinal elements having handle extensions substantially beyond thearcuate members.

5. Ina track working machine, a base, a plurality of track engagingdouble flanged rollers rotatably mounted on said base and aligned upona` single rail of a track, a transverse member extending laterally fromsaid base toward the adjacent rail of the track, a motor mounted uponsaid base, motor and base being in substantial balance upon the singlerail over which they are positioned, but overbalanced slightly towardthe adjacent rail, land a carrying frame secured to said base, saidframe including generally arcuate members lying in planes at rightangles to said rail and secured at their lower ends to the base, saidarcuate members being connected by longitudinalelements, saidlongitudinal elements having handle extensions substantially beyond thearcuate members, a drive pulley associated with said motor, a drivenpulley, laterally spaced from said drive pulley, supported on said base,a driving belt surrounding said pulleys the axes of driving and drivenpulleys being parallel and a flexible shaft driven by said driven pulleyand a grinding tool at the extremity of said flexible shaft.

6. In a track working machine, a base, a plu-y rality of track engagingdouble flanged rollers rotatably mounted on said base and aligned upon asingle rail of a track, a transverse member extending laterally fromsaid base toward the adjacent rail of the track, a motor mounted uponsaid base, motor and base being in substantial balance upon thesinglerail over which they are positioned, but overbalanced slightly towardthe adjacent rail, and a carrying frame secured to said base, said frameincluding generally arcuate members lying in planes at right angles tosaid rail and secured at their lower ends to the base, said arcuatemembers being connected by longitudinal elements, said longitudinalelements having handle extensions substantially beyond the arcuatemembers, a drive pulley associated with said motor, a driven pulley,laterally spaced from said drive pulley, supported on said base, adriving belt surrounding said pulleys the axes of driving and drivenpulleys being parallel and a flexible shaft driven by said driven pulleyand a grinding tool at the extremity of said flexible shaft, and a linkupon which said driven pulley is mounted, said link being pivotallysupported in relation to said base.

' Y HENRY H. TAI .BOYS.-

